16211449 has 2 divisors, whose sum is σ = 16211450. Its totient is φ = 16211448.

The previous prime is 16211417. The next prime is 16211453. The reversal of 16211449 is 94411261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10036224 + 6175225 = 3168^2 + 2485^2 .

It is a cyclic number.

It is not a de Polignac number, because 16211449 - 2⁵ = 16211417 is a prime.

It is a super-2 number, since 2×16211449² = 525622157359202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16217449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8105724 + 8105725.

It is an arithmetic number, because the mean of its divisors is an integer number (8105725).

Almost surely, 2^16211449 is an apocalyptic number.

It is an amenable number.

16211449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16211449 is an equidigital number, since it uses as much as digits as its factorization.

16211449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 16211449 is about 4026.3443717596. The cubic root of 16211449 is about 253.0893933353.

It can be divided in two parts, 162 and 11449, that added together give a palindrome (11611).

The spelling of 16211449 in words is "sixteen million, two hundred eleven thousand, four hundred forty-nine".